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{************************************************************************}
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{ }
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{ Borland Delphi Visual Component Library }
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{ InterBase Express core components }
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{ }
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{ Copyright (c) 1998-2000 Inprise Corporation }
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{ }
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{ InterBase Express is based in part on the product }
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{ Free IB Components, written by Gregory H. Deatz for }
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{ Hoagland, Longo, Moran, Dunst & Doukas Company. }
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{ Free IB Components is used under license. }
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{ }
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{ The contents of this file are subject to the InterBase }
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{ Public License Version 1.0 (the "License"); you may not }
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{ use this file except in compliance with the License. You }
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{ may obtain a copy of the License at http://www.Inprise.com/IPL.html }
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{ Software distributed under the License is distributed on }
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{ an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either }
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{ express or implied. See the License for the specific language }
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{ governing rights and limitations under the License. }
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{ The Original Code was created by InterBase Software Corporation }
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{ and its successors. }
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{ Portions created by Inprise Corporation are Copyright (C) Inprise }
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{ Corporation. All Rights Reserved. }
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{ Contributor(s): Jeff Overcash }
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{ }
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{ IBX For Lazarus (Firebird Express) }
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{ Contributor: Tony Whyman, MWA Software http://www.mwasoftware.co.uk }
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{ Portions created by MWA Software are copyright McCallum Whyman }
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{ Associates Ltd 2011 }
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{ }
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{************************************************************************}
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unit IBUtils;
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{$IFDEF MSWINDOWS}
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{$DEFINE WINDOWS}
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{$ENDIF}
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{$IFDEF FPC}
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{$Mode Delphi}
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{$codepage UTF8}
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{$ENDIF}
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interface
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uses Classes, SysUtils;
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const
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CRLF = #13 + #10;
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CR = #13;
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LF = #10;
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TAB = #9;
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NULL_TERMINATOR = #0;
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sqlReservedWords: array [0..197] of string = (
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'ADD',
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'ADMIN',
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'ALL',
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'ALTER',
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'AND',
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'ANY',
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'AS',
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'AT',
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'AVG',
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'BEGIN',
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'BETWEEN',
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'BIGINT',
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'BIT_LENGTH',
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'BLOB',
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'BOOLEAN',
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'BOTH',
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'BY',
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'CASE',
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'CAST',
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'CHAR',
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'CHAR_LENGTH',
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'CHARACTER',
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'CHARACTER_LENGTH',
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'CHECK',
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'CLOSE',
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'COLLATE',
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'COLUMN',
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'COMMIT',
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'CONNECT',
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'CONSTRAINT',
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'CORR',
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'COUNT',
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'COVAR_POP',
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'COVAR_SAMP',
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'CREATE',
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'CROSS',
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'CURRENT',
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'CURRENT_CONNECTION',
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'CURRENT_DATE',
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'CURRENT_ROLE',
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'CURRENT_TIME',
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'CURRENT_TIMESTAMP',
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'CURRENT_TRANSACTION',
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'CURRENT_USER',
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'CURSOR',
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'DATE',
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'DAY',
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'DEC',
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'DECIMAL',
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'DECLARE',
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'DEFAULT',
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'DELETE',
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'DELETING',
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'DETERMINISTIC',
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'DISCONNECT',
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'DISTINCT',
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'DOUBLE',
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'DROP',
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'ELSE',
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'END',
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'ESCAPE',
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'EXECUTE',
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'EXISTS',
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'EXTERNAL',
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'EXTRACT',
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'FALSE',
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'FETCH',
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'FILTER',
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'FLOAT',
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'FOR',
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'FOREIGN',
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'FROM',
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'FULL',
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'FUNCTION',
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'GDSCODE',
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'GLOBAL',
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'GRANT',
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'GROUP',
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'HAVING',
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'HOUR',
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'IN',
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'INDEX',
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'INNER',
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'INSENSITIVE',
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'INSERT',
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'INSERTING',
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'INT',
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'INTEGER',
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'INTO',
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'IS',
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'JOIN',
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'LEADING',
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'LEFT',
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'LIKE',
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'LONG',
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'LOWER',
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'MAX',
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'MAXIMUM_SEGMENT',
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'MERGE',
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'MIN',
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'MINUTE',
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'MONTH',
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'NATIONAL',
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'NATURAL',
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'NCHAR',
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'NO',
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'NOT',
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'NULL',
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'NUMERIC',
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'OCTET_LENGTH',
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'OF',
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'OFFSET',
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'ON',
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'ONLY',
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'OPEN',
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'OR',
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'ORDER',
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'OUTER',
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'OVER',
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'PARAMETER',
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'PLAN',
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'POSITION',
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'POST_EVENT',
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'PRECISION',
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'PRIMARY',
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'PROCEDURE',
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'RDB$DB_KEY',
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'RDB$RECORD_VERSION',
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'REAL',
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'RECORD_VERSION',
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'RECREATE',
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'RECURSIVE',
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'REFERENCES',
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'REGR_AVGX',
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'REGR_AVGY',
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'REGR_COUNT',
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'REGR_INTERCEPT',
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'REGR_R2',
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'REGR_SLOPE',
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'REGR_SXX',
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'REGR_SXY',
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'REGR_SYY',
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'RELEASE',
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'RETURN',
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'RETURNING_VALUES',
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'RETURNS',
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'REVOKE',
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'RIGHT',
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'ROLLBACK',
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'ROW',
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'ROW_COUNT',
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'ROWS',
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'SAVEPOINT',
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'SCROLL',
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'SECOND',
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'SELECT',
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'SENSITIVE',
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'SET',
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'SIMILAR',
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'SMALLINT',
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'SOME',
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'SQLCODE',
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'SQLSTATE',
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'SQLSTATE',
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'START',
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'STDDEV_POP',
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'STDDEV_SAMP',
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'SUM',
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'TABLE',
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'THEN',
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'TIME',
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'TIMESTAMP',
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'TO',
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'TRAILING',
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'TRIGGER',
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'TRIM',
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'TRUE',
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'UNION',
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'UNIQUE',
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'UNKNOWN',
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'UPDATE',
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'UPDATING',
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'UPPER',
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'USER',
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'USING',
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'VALUE',
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'VALUES',
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'VAR_POP',
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'VAR_SAMP',
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'VARCHAR',
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'VARIABLE',
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'VARYING',
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'VIEW',
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'WHEN',
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'WHERE',
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'WHILE',
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'WITH',
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'YEAR'
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);
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function Max(n1, n2: Integer): Integer;
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function Min(n1, n2: Integer): Integer;
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function RandomString(iLength: Integer): AnsiString;
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function RandomInteger(iLow, iHigh: Integer): Integer;
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function StripString(st: AnsiString; CharsToStrip: AnsiString): AnsiString;
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function FormatIdentifier(Dialect: Integer; Value: AnsiString): AnsiString;
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function FormatIdentifierValue(Dialect: Integer; Value: AnsiString): AnsiString;
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function FormatIdentifierValueNC(Dialect: Integer; Value: AnsiString): AnsiString;
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function ExtractIdentifier(Dialect: Integer; Value: AnsiString): AnsiString;
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function QuoteIdentifier(Dialect: Integer; Value: AnsiString): AnsiString;
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function QuoteIdentifierIfNeeded(Dialect: Integer; Value: AnsiString): AnsiString;
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function Space2Underscore(s: AnsiString): AnsiString;
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function SQLSafeString(const s: AnsiString): AnsiString;
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implementation
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function Max(n1, n2: Integer): Integer;
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begin
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if (n1 > n2) then
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result := n1
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else
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result := n2;
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end;
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function Min(n1, n2: Integer): Integer;
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begin
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if (n1 < n2) then
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result := n1
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else
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result := n2;
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end;
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function RandomString(iLength: Integer): AnsiString;
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begin
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result := '';
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while Length(result) < iLength do
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result := result + IntToStr(RandomInteger(0, High(Integer)));
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if Length(result) > iLength then
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result := Copy(result, 1, iLength);
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end;
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function RandomInteger(iLow, iHigh: Integer): Integer;
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begin
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result := Trunc(Random(iHigh - iLow)) + iLow;
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end;
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function StripString(st: AnsiString; CharsToStrip: AnsiString): AnsiString;
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var
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i: Integer;
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begin
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result := '';
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for i := 1 to Length(st) do begin
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if AnsiPos(st[i], CharsToStrip) = 0 then
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result := result + st[i];
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end;
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end;
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function FormatIdentifier(Dialect: Integer; Value: AnsiString): AnsiString;
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begin
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Value := Trim(Value);
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if Dialect = 1 then
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Value := AnsiUpperCase(Value)
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else
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if (Value <> '') and (Value[1] = '"') then
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Value := '"' + StringReplace (TrimRight(Value), '"', '""', [rfReplaceAll]) + '"'
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else
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Value := AnsiUpperCase(Value);
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Result := Value;
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end;
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function FormatIdentifierValue(Dialect: Integer; Value: AnsiString): AnsiString;
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begin
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Value := Trim(Value);
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if Dialect = 1 then
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Value := AnsiUpperCase(Value)
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else
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begin
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if (Value <> '') and (Value[1] = '"') then
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begin
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Delete(Value, 1, 1);
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Delete(Value, Length(Value), 1);
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Value := StringReplace (Value, '""', '"', [rfReplaceAll]);
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end
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else
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Value := AnsiUpperCase(Value);
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end;
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Result := Value;
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end;
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function FormatIdentifierValueNC(Dialect: Integer; Value: AnsiString): AnsiString;
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begin
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Value := Trim(Value);
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if Dialect = 1 then
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Value := AnsiUpperCase(Value)
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else
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begin
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if (Value <> '') and (Value[1] = '"') then
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begin
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Delete(Value, 1, 1);
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Delete(Value, Length(Value), 1);
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Value := AnsiUpperCase(StringReplace (Value, '""', '"', [rfReplaceAll]));
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end
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else
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Value := AnsiUpperCase(Value);
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end;
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Result := Value;
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end;
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function ExtractIdentifier(Dialect: Integer; Value: AnsiString): AnsiString;
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begin
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Value := Trim(Value);
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if Dialect = 1 then
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Value := AnsiUpperCase(Value)
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else
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begin
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| 371 |
if (Value <> '') and (Value[1] = '"') then
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begin
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| 373 |
Delete(Value, 1, 1);
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Delete(Value, Length(Value), 1);
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Value := StringReplace (Value, '""', '"', [rfReplaceAll]);
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end
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else
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Value := AnsiUpperCase(Value);
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end;
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Result := Value;
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end;
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| 382 |
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function IsReservedWord(w: AnsiString): boolean;
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| 384 |
var i: integer;
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begin
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| 386 |
Result := true;
|
| 387 |
for i := 0 to Length(sqlReservedWords) - 1 do
|
| 388 |
if w = sqlReservedWords[i] then
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Exit;
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Result := false;
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| 391 |
end;
|
| 392 |
|
| 393 |
function QuoteIdentifier(Dialect: Integer; Value: AnsiString): AnsiString;
|
| 394 |
begin
|
| 395 |
if Dialect = 1 then
|
| 396 |
Value := AnsiUpperCase(Trim(Value))
|
| 397 |
else
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| 398 |
Value := '"' + Value + '"';
|
| 399 |
Result := Value;
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| 400 |
end;
|
| 401 |
|
| 402 |
function QuoteIdentifierIfNeeded(Dialect: Integer; Value: AnsiString): AnsiString;
|
| 403 |
begin
|
| 404 |
if (Dialect = 3) and
|
| 405 |
((AnsiUpperCase(Value) <> Value) or IsReservedWord(Value)) then
|
| 406 |
Result := '"' + Value + '"'
|
| 407 |
else
|
| 408 |
Result := Value
|
| 409 |
end;
|
| 410 |
|
| 411 |
function Space2Underscore(s: AnsiString): AnsiString;
|
| 412 |
var
|
| 413 |
k: integer;
|
| 414 |
begin
|
| 415 |
Result := s;
|
| 416 |
for k := 1 to Length(s) do
|
| 417 |
if not (Result[k] in ['0'..'9','A'..'Z','_','$']) then
|
| 418 |
Result[k] := '_';
|
| 419 |
end;
|
| 420 |
|
| 421 |
function SQLSafeString(const s: AnsiString): AnsiString;
|
| 422 |
begin
|
| 423 |
Result := StringReplace(s,'''','''''',[rfReplaceAll]);
|
| 424 |
end;
|
| 425 |
|
| 426 |
end.
|
